Compiler constant handling rework

In preparation for de-optimization, reworked the constant
handling mechanism.  Also took advantage of knowledge of
constant operands (particularly for long operations).

Significant performance improvements for Mandelbrot
(~60 seconds to ~34 seconds).  Minor improvements in other
benchmarks.

The new constant handling breaks two of the existing
optimization passes: "Skip Large Method" and "Load/Store
Elimization."

I don't intend to update the large method optimization
because it will be superceeded by the upcoming interpreter/
fingerprinting mechanism.  Leaving the code in place for
now in order to compare compile-time improvements with
fingerprinting/interpret.  All related code will be deleted
when that is complete.

The load/store elimination pass needs some rework to handle
uses of multiple-register loads and stores.  It will be
updated & restored in a future CL.

Change-Id: Ia979abaf51b8ae81bbb0428031cbcea854625fac

1 files changed, 1 insertions, 0 deletions

diff --git a/src/compiler/compiler_enums.h b/src/compiler/compiler_enums.h
index bdf7a8bd5c..ae305c0ad5 100644
--- a/src/compiler/compiler_enums.h
+++ b/src/compiler/compiler_enums.h
@@ -291,6 +291,7 @@ enum ThrowKind {
   kThrowNullPointer,
   kThrowDivZero,
   kThrowArrayBounds,
+  kThrowConstantArrayBounds,
   kThrowNoSuchMethod,
   kThrowStackOverflow,
 };